Question

Noodles and Company tested consumer reaction to two spaghetti sauces. Each of 70 raters assessed both sauces on a scale of 1 (worst) to 10 (best) using several taste criteria. To correct for possible bias in tasting order, half the raters tasted Sauce A first, while the other half tasted Sauce B first. Actual results are shown below for "overall liking."
(a) Calculate the mean and standard deviation for each sample.
(b) Calculate the coefficient of variation for each sample.
(c) What is your conclusion about consumer preferences for the two sauces? Spaghetti (Source: Noodles and Company)